CN102959486A

CN102959486A - Pressure reducing apparatus

Info

Publication number: CN102959486A
Application number: CN2011800312440A
Authority: CN
Inventors: 兴津政幸; 猪熊直树; 塚本坚二
Original assignee: SMC Corp
Current assignee: SMC Corp
Priority date: 2010-06-24
Filing date: 2011-06-15
Publication date: 2013-03-06
Anticipated expiration: 2031-06-15
Also published as: RU2012155411A; US20130074956A1; TWI448864B; JP5464438B2; WO2011162270A3; KR20130038279A; JP2012008795A; TW201207586A; KR101405084B1; DE112011102092T5; BR112012033218A2; RU2541687C2; CN102959486B; DE112011102092B4; WO2011162270A2; BR112012033218B1; US9086701B2

Abstract

A pressure reducing apparatus (10) includes a body (12) being equipped with a first side port (20) through which a pressure fluid is supplied and a second side port (22) through which the pressure fluid having been reduced in pressure is discharged. Further, a feedback passage (64) is formed, which establishes communication between the second side port (22) and a third diaphragm chamber (90) that faces toward a pilot valve (93). Additionally, a pressure fluid that flows through the second side port (22) is introduced through the feedback passage (64) into the third diaphragm chamber (90), whereby a third diaphragm (78) is pressed upwardly against an elastic force of a second spring (82) into equilibrium.

Description

Pressure regulating equipment

Technical field

The present invention relates to a kind of pressure regulating equipment, this pressure regulating equipment is used for the pressure of the pressure fluid of supply is reduced to desired pressure and outside guide pressure fluid.

Background technology

Open among the patent gazette No.10-198433 in that Japan is flat, this application proposes a kind of pressure regulating equipment, is reduced to desired pressure and this pressure fluid outwards is directed to the second side by the pressure of this pressure regulating equipment from the pressure fluid of the first side supply.The pressure of setting with expectation at pressure fluid is fed in the situation of fluid pressure device from the hydrodynamic pressure source of supply, pressure regulating equipment is disposed between hydrodynamic pressure source of supply and the fluid pressure device, thereby the pressure that is fed to the pressure fluid of the first side from the hydrodynamic pressure source of supply is reduced to desired pressure, this pressure fluid is supplied to the second side afterwards, and this desired pressure is corresponding to the explanation of the fluid pressure device that is connected to the second side.

Summary of the invention

The object of the present invention is to provide a kind of pressure regulating equipment, in this pressure regulating equipment, the amount of the air by pressure regulating equipment consumption is reduced.

The invention is characterized in a kind of pressure regulating equipment, this pressure regulating equipment has: valve body, and this valve body is by controlling the flowing of pressure fluid that imports back pressure chamber from the first side with respect to the separation of nozzle and closed action; And chamber of septum, this chamber of septum is communicated with back pressure chamber by the valve member that is arranged in the valve body, and this pressure regulating equipment is used for and will be reduced to desired pressure from the pressure of the pressure fluid of the first side supply, and this pressure fluid outwards is directed to the second side.

Pressure regulating equipment comprises: valve body, this valve body are arranged between back pressure chamber and the chamber of septum, and this valve body is configured to removable with respect to nozzle; The first interface channel, this first interface channel connects the first side and back pressure chamber, and switches connected state by valve body in this first interface channel; With the second interface channel, this second interface channel is communicated with between the second side and chamber of septum.

The baffle plate of valve body (flapper) is arranged on the fluid supply side of back pressure chamber, and the first interface channel is connected to the fluid supply side, and back pressure chamber is communicated with the second side via the second interface channel.

According to the present invention, pressure regulating equipment reduces the pressure of pressure fluid and makes this pressure fluid from the first effluent to the second side, in this pressure regulating equipment, by the first interface channel and the second interface channel are set, in the situation of the set pressure of the pressure fluid that does not preset the second side, by means of valve body, can fully interrupt (perhaps hindering) pressure fluid and be fed to back pressure chamber, wherein this first interface channel connects the first side and back pressure chamber and switch connected state by valve body in this first interface channel, and this second interface channel is communicated with between the second side and the first chamber of septum.Just because this, pressure fluid can not be discharged to atmosphere.On the other hand, even in the situation of having set set pressure, the pressure fluid in the back pressure chamber can not be discharged to atmosphere yet, because the pressure fluid in the back pressure chamber flows to the second side through nozzle, chamber of septum and the second interface channel.Thereby, be discharged to the conventional pressure regulating equipment of atmosphere than the pressure fluid as pilot pressure (pilot pressure), because pilot pressure is supplied to the second side and is employed in the second side, so can suppress unwanted pressure fluid consumption, and its consumption can be reduced.

Also combination is with the accompanying drawing shown in the illustrative example mode by following explanation, and above and other purpose of the present invention, Characteristics and advantages will be more obvious.

Description of drawings

Fig. 1 is the global sections figure according to the pressure regulating equipment of the first embodiment of the present invention;

Fig. 2 is the schematic diagram that shows the pressure regulating equipment of Fig. 1;

Fig. 3 is the global sections figure of pressure regulating equipment according to a second embodiment of the present invention;

Fig. 4 is the schematic sectional view that shows the pressure regulating equipment of Fig. 3;

Fig. 5 is the global sections figure of the pressure regulating equipment of a third embodiment in accordance with the invention;

Fig. 6 is near the amplification sectional view that shows the guide valve (pilot valve) in the pressure regulating equipment of Fig. 5; With

Fig. 7 is the schematic diagram that shows the pressure regulating equipment of Fig. 5.

Embodiment

As illustrated in fig. 1 and 2, pressure regulating equipment 10 comprises body 12, valve system 14, and this valve system 14 is for the flow state of switching the fluid in the body 12 of flowing through; Valve gap 16, this valve gap 16 is connected to the upper part of body 12; With executive component 18, this executive component 18 be can be rotatably set in the top of valve gap 16.

Body 12 is comprised of the first noumenon 24 with the first side ports (the first side) 20 and second side ports (the second side) 22, the second body 26 of upper part that is arranged on the first noumenon 24 and the 3rd body 26 that is arranged on the upper part of the second body 26.The first noumenon 24, the second body 26 and the 3rd body 28 are integrally made up by the bolt that does not show.

The first side ports 20 is opened and is connected to the pressure fluid source of supply that does not show at a side surface of body.The second side ports 22 is opened the opposite side surface of body and is connected to the fluid pressure device that does not show.In addition, communicating passage 30 is formed between the first side ports 20 and the second side ports 22, and this communicating passage 30 is set up the connection between the first side ports 20 and the second side ports 22.Valve seat 32 is formed on the inside of communicating passage 30, and described main valve 66 can be positioned on this valve seat 32 after a while.

In addition, on the lower part of the first noumenon 24, mounting hole 34 is communicated with communicating passage 30, and faces down and under shed.Closure plug 36 by under be inserted in the

mounting hole

34 and 38 lockings of locked ring.Thereby mounting hole 34 is closed plug 36 and blocks, and the connection between communicating passage 30 and the outside is blocked.

The first barrier film 42 is arranged between the first noumenon 24 and the second body 26 by the first retaining member 40 in the centre, and the second barrier film 46 is arranged between the second body 26 and the 3rd body 28 by flat the second retaining member 44.The core that hole 48 is formed in the first retaining member 40 penetrates along axis direction (direction of arrow A and B).

In addition, on the lower part of the first barrier film 42, the first chamber of septum 50 is arranged between the first noumenon 24 and the first barrier film 42, and is communicated with the second side ports 22 by the intercommunicating pore 52 that is formed in the first noumenon 24.In addition, the second chamber of septum 54 is arranged between the first barrier film 42 and the second barrier film 46, and is communicated with discharge port 56, and this discharges port 56 in a side upper shed of the second body 26.More specifically, the second chamber of septum 54 is communicated with outside by discharging port 56.

In addition, on the top of the second barrier film 46, nozzle back pressure chamber (back pressure chamber) 58 is formed between the second barrier film 46 and the 3rd body 28, and is communicated with through hole 60, and this through hole 60 penetrates along axis direction at the center of the 3rd body 28.

On the other hand, in the first to the

3rd body

24,26,28, bypass passage (the first interface channel) 62 centers with respect to body 12 are formed in the first side ports 20, thereby are communicated with between the first side ports 20 and through hole 60.More specifically, bypass passage 62 is connected to the upper part of the first side ports 20, and after extending upward through the first to the

3rd body

24,26,28, bypass passage 62 with right-angle bending, and is connected to through hole 60 towards the central side of the 3rd body 28.

In addition, in the first to the

3rd body

24,26,28, feedback channel (the second interface channel) 64 centers with respect to body 12 are formed in the second side ports 22, thereby are communicated with between the 3rd chamber of septum described later (chamber of septum) 90 of the second side ports 22 and valve gap 16.More specifically, feedback channel 64 is connected to the upper part of the second side ports 22, and after extending upward through the first to the

3rd body

24,26,28, feedback channel 64 is upwards further crooked with the right angle, and is connected to the 3rd chamber of septum 90.

Bypass passage 62 and feedback channel 64 be formed not with the first and second chamber of

septum

50,54 and nozzle back pressure chamber 58 in any one be communicated with.

Valve system 14 is arranged in the communicating passage 30 of the first noumenon 24, and comprises the main valve 66 that arranges movably along vertical direction (direction of arrow A and B), and inserts the first spring 68 between main valve 66 and the closure plug 36.

Main valve 66 comprises: seat member 70, this member 70 are arranged on the top of closure plug 36 and its and are shaped as upwards and are tapered; With containment member 72, sealing member 72 is formed the top of present member 70 and the hole 48 of closed the first retaining member 40.In main valve 66, containment member 72 is guided along axis direction movably by inserting in the bullport 74, and this bullport 74 penetrates the center of the first noumenon 24.

The first spring 68 comprises volute spring, for example, this first spring 68 with closure plug 36 away from direction (direction of arrow A) promote main valve 66, thereby be used for the valve seat 32 placement seat members 70 with respect to the first noumenon 24.

Valve gap 16 is formed cylindrical shape, and is connected to the top of the 3rd body 28 by base component 76, and this base component 76 is arranged on the bottom of valve gap 16.The 3rd barrier film 78 is arranged between valve gap 16 and the base component 76 with the 3rd retaining member 80.The 3rd retaining member 80 is arranged in the approximate centre part of the 3rd barrier film 78.The second spring 82, rotatable shaft 84 and spring retainer 86 are arranged on the inside of valve gap 16.The second spring 82 comprises volute spring, and rotatable shaft 84 and spring retainer 86 form executive component 18.

Disc element 88 is arranged on the upper surface of the 3rd barrier film 78, and the 3rd retaining member 80 is adapted in disc element 88.The end of the second spring 82 is fixed to the top of disc element 88.The 3rd chamber of septum 90 is formed between the 3rd barrier film 78 and the base component 76, and is communicated with the through hole 60 of the 3rd body 28.

Base component 76 is equipped with nozzle 92, and this nozzle 92 is outstanding downwards from its approximate centre part, and nozzle 92 is inserted into the inside of the through hole 60 of the 3rd body 28.

The inside of nozzle 92 comprises: valve opening 94, and this valve opening 94 penetrates along axis direction (direction of arrow A and B), and guide valve described later (valve body) 93 is inserted in this valve opening 94; One contralateral exposure 96, this contralateral exposure 96 is in the direction upper shed perpendicular to valve opening 94.Bypass passage 62 and valve opening 94 are interconnected by side opening 96.

In the inside of guide valve 93, guide channel 98 is formed along axis direction (direction of arrow A and B) and penetrates.Guide valve 93 can be mobile at axis direction (direction of arrow A and B) with respect to valve opening 94 and through hole 60.On the upper end of guide valve 93, be formed with valve member 100, this valve member 100 caves in and has semicircular xsect, spherical 106(aftermentioned) be maintained in this valve member 100.

In addition, the 3rd spring 102 is inserted between the bottom and through hole 60 of guide valve 93, and upwards (on the direction of arrow A) promotes guide valve 93.Just because this, the baffle plate of guide valve 93 (flapper) 104 is against the bottom of nozzle 92, thus the connection between obstruction valve opening 94 and the nozzle back pressure chamber 58.

On the other hand, the function that remains on the spherical 106 in the valve member 100 is closed guide channel 98, and this spherical 106 under the elasticity of the 3rd spring normally against the lower surface of the 3rd retaining member 80.

Executive component 18 has: rotatable shaft 84, this rotatable shaft 84 are threaded in the upper part of valve gap 16; With handle 108, this handle 108 is adapted to rotatable shaft 84 and engages.Handle 108 is configured to cover the upper part of valve gap 16.In addition, on the bottom of rotatable shaft 84, spring retainer 86 is threadedly engaged with by the bottom of flange and this rotatable shaft 84, and the other end of the second spring 82 is fixed to spring retainer 86.More specifically, in the inside of valve gap 16, the second spring 82 is inserted between spring retainer 86 and the disc element 88, and be used for spring retainer 86 and disc element 88 mutually away from direction on promote mutually spring retainer 86 and disc element 88.

In addition, by rotating handles 108, rotatable shaft 84 is with handle 108 rotation, thereby the spring retainer 86 that is threaded on the rotatable shaft 84 moves along axis direction.Just because this, for example, the second spring 82 is compressed by spring retainer 86, and its pressing force is applied in (that is, bias voltage) the 3rd barrier film 78.

Pressure regulating equipment 10 according to the first embodiment of the present invention is as above constructed.Secondly, will operation and the advantage of this pressure regulating equipment 10 be described.

At first, pressure fluid source of supply (not shown) is connected to the first side ports 20 by the pipe that does not show, for example is connected to the second side ports 22 such as the fluid pressure device of the expectation of cylinder etc.Pressure fluid from the pressure fluid source of supply that does not show is supplied to the first side ports 20.

After the above-mentioned pre-operation, the operator consists of the handle 108 of executive component 18 in the direction rotation of expectation.By causing that spring retainer 86 descends, the second spring 82 is compressed, thereby disc element 88 and the 3rd barrier film 78 are pressed downwards with predetermined pressure (set pressure) by the elastic force of the second spring 82.Because the 3rd barrier film 78 pressed downwards, thus guide valve 93 overcome the elastic force of the 3rd spring 102 and descend, and so that the lower end of baffle plate 104 and nozzle 92 away from.Just because this, the pressure fluid of the bypass passage 62 of flowing through is through through hole 60 and be supplied to nozzle back pressure chamber 58.

In addition, the pressure in the nozzle back pressure chamber 58 (nozzle back pressure) raises, and the second barrier film 46 is pressed downwards by this pressure, and simultaneously, the first barrier film 42 is pressed downwards, and main valve 66 overcomes the elastic force of the first spring 68 via the first retaining member 40 and descends.Thereby the seat member 70 of main valve 66 separates with the valve seat 32 of the first noumenon 24, thereby the first side ports 20 and the second side ports 22 are interconnected.Just because this, the pressure fluid that is fed to the first side ports 20 communicating passage 30 of flowing through arrives the second side ports 22.

At this moment, a part that flows into the pressure fluid of the second side ports 22 raises by the pressure that feedback channel 64 flows to the 3rd chamber of septum 90, the three chamber of septum 90.Simultaneously, the 3rd barrier film 78 is pressed and overcomes the pressing force of the second spring 82 and move up.Just because this, guide valve 93 moves up by the elastic force of the 3rd spring 102.

In addition, when the pressing force balance of the pressure of the 3rd barrier film 90 and the second spring 82, the baffle plate 104 of guide valve 93 is placed in the bottom of nozzle 93, and occluding pressure fluid-phase flowing for nozzle back pressure chamber 58.Pressure fluid flows to the second side ports 22, and is supplied to the fluid pressure device that does not show, the pressure of this pressure fluid is adjusted to set pressure by handle 108.

On the other hand, when the pressure rise in the second side ports 22 is on the set pressure that arranges based on the rotation angle (rotation amount) of handle 108, the pressure fluid of the pressure rise feedback channel 64 of flowing through, enter the 3rd chamber of septum 90, and the elastic force that overcomes the second spring 82 further make progress (direction of arrow A) press and mobile the 3rd barrier film 78.Simultaneously, because the pressure of the pressure fluid in nozzle back pressure chamber 58 and the guide channel 98 is higher than the pressure of the pressure fluid in the 3rd chamber of septum 90, so pressure differential (pressure that differs) causes spherical 106 upwards to be pressed and away from valve member 100.

Thereby guide channel 98 and the 3rd chamber of septum 90 are interconnected, and the guide channel 98 of flowing through of the pressure fluids in the nozzle back pressure chamber 58, enter the 3rd chamber of septum 90, thus the pressure drop in the nozzle back pressure chamber 58.Spherical 106 and valve member 100 are as nozzle-baffle mechanism.

By reducing the nozzle back pressure, the first barrier film 42 and the second barrier film 46 move up, thereupon the containment member 72 of main valve 66 and the first retaining member 40 away from.Simultaneously, main valve 66 rises under the elastic reaction of the first spring 68, thereby seat member 70 is placed on the valve seat 32.Thereby open in the hole 48 of the first retaining member 40 of containment member 72 closures by main valve 66, and pressure in the first side ports 22, risen pressure fluid be directed to the second chamber of septum 54 via hole 48, and be discharged to atmosphere by discharging port 56.

According to the first embodiment, feedback channel 64 is set in the above described manner, this feedback channel 64 is set up the connection between the second side ports 22 and the 3rd chamber of septum 90, simultaneously, this structure is so that when pressure fluid flows to the second side ports 22 from the first side ports 20, the pressure fluid that is fed to nozzle back pressure chamber 58 feedback channel 64 of can flowing through arrives the second side ports 22, and can not be discharged to the outside.

Just because above-mentioned structure, the second wall pressure (set pressure) in the second side ports 22 does not have in the predefined situation, the baffle plate 104 of guide valve 93 is placed on the bottom of nozzle 92, and fully blocks pressure fluid is fed to nozzle back pressure chamber 58.Therefore, the pressure fluid of formation pilot pressure is not discharged to atmosphere.In addition, even second wall pressure (set pressure) of the pressure fluid in the second side ports 22 is set up, this pressure still can be regulated by executive component 18, because the pressure fluid in the nozzle back pressure chamber 58 flows to the second side ports 22 by guide channel 98 and the 3rd chamber of septum 90, so pressure fluid can not be discharged to atmosphere.Thereby, be discharged to the conventional pressure regulating equipment of atmosphere than the pressure fluid as pilot pressure, because pilot pressure can be supplied to the second side ports 22, thus the unnecessary consumption of pressure fluid can be suppressed, and the consumption of pressure fluid is reduced effectively.

Secondly, Fig. 3 and 4 pressure regulating equipments 150 of showing according to the second embodiment.Be denoted by like references according to the identical element profit of the pressure regulating equipment 10 of the first embodiment, omit specific description here.

Be according to the pressure regulating equipment 150 of the second embodiment and difference according to the pressure regulating equipment 10 of the first embodiment, branched bottom 152 is arranged in the body 12, this branched bottom 152 is from feedback channel 64 bifurcateds and be connected to nozzle back pressure chamber 58, and throttle part 154 is included in the branched bottom 152.

Branched bottom 152 forms along vertical direction in the 3rd body 28 that forms body 12.The lower end of branched bottom 152 is connected to nozzle back pressure chamber 58, and the upper end of branched bottom 152 is connected to feedback channel 64.More specifically, branched bottom 152 is interconnected via feedback channel 64 and nozzle back pressure chamber 58, the second side ports 22 and the 3rd chamber of septum 90.

In addition, the throttle part 154 with throttle orifice 156 is arranged in the branched bottom 152, and the diameter of this throttle orifice 156 reduces from the channel diameter of branched bottom 152.Throttle orifice 156 for example forms the side (direction of arrow A on) of its diameter from nozzle back pressure chamber 58 towards the 3rd chamber of septum 90 and reduces gradually.

By this way, in body 12, branched bottom 152 is configured to from being arranged on feedback channel 64 bifurcateds on the second side and being communicated with nozzle back pressure chamber 58, and the channel diameter of throttle part 154 reduces and is arranged in the branched bottom 152.With respect to flowing out from nozzle back pressure chamber 58, flow through throttle part 154 and flow to the flow of the pressure fluid of the second side ports 22, by utilizing guide valve 93 control from the branched bottom 62 and flow to the flow of the pressure fluid of nozzle back pressure chamber 58 of flowing through of the first side ports 20 supplies, the accurately pressure in the Control Nozzle back pressure chamber 58.

Thereby in pressure regulating equipment 150, set pressure can be set to lower value, and in addition, because the pressure differential between inhibition nozzle back pressure chamber 58 and the second side ports 22, than the pressure regulating equipment of routine, the consumption of pressure fluid reduces.

Secondly, Fig. 5 to 7 shows the pressure regulating equipment 200 according to the 3rd embodiment.Be denoted by like references according to the identical element profit of the pressure regulating equipment 10 of the first embodiment, omit specific description here

Be according to the pressure regulating equipment 200 of the 3rd embodiment and difference according to the pressure regulating equipment 10 of the first embodiment, be arranged in the valve member 100 of guide valve 93 at the recess groove (groove) 202 that the direction away from spherical 106 caves in.

Recess groove 202 for example is formed with triangular cross section, thereby when spherical 106 is placed on the valve member 100, keeps the connection between guide channel 98 and the 3rd chamber of septum 90.Just owing to this, even when spherical 106 is placed on the valve member 100 of guide valve 93, nozzle back pressure chamber 58 and the 3rd chamber of septum 90 can be interconnected by guide channel 98, and the 3rd chamber of septum 90 of can flowing through of the pressure fluid in the nozzle back pressure chamber 58 arrives the second side ports 22.Thereby, flow to the second side ports 22 by authorized pressure fluid always from nozzle back pressure chamber 58, can carry out accurately the control of the second wall pressure (set pressure).

In addition, than the pressure regulating equipment 150 according to the second embodiment, because recess groove 202 can be set directly in the valve member 100, thus can the simplified apparatus structure, and can not increase number of components.In addition, even in the situation that recess groove 202 is blocked by dust etc., when spherical 106 separated with valve member 100, because the pressure fluid that flows, these dusts blew out from recess groove 202, thereby prevented that dust from blocking.

Pressure regulating equipment according to the present invention is not limited to above-described embodiment.Certainly can adopt various structures other or that revise not deviating from marrow of the present invention and essence.

Claims

1. pressure regulating equipment (10,150,200), described pressure regulating equipment (10,150,200) have valve body (93), by separation and the closed action of described valve body (93) with respect to nozzle (92), described valve body (93) is controlled flowing from the pressure fluid of the first side (20) importing back pressure chamber (58); And chamber of septum (90), described chamber of septum (90) is communicated with described back pressure chamber (58) by the valve member (100) that is arranged in the described valve body (93), described pressure regulating equipment (10,150,200) be used for and be reduced to desired pressure from the pressure of the described pressure fluid of described the first side (20) supply, and described pressure fluid outwards is directed to the second side (22), it is characterized in that, described pressure regulating equipment (10,150,200) comprising:

Described valve body (93), described valve body (93) are arranged between described back pressure chamber (58) and the described chamber of septum (90), and described valve body (93) is configured to removable with respect to described nozzle (92);

The first interface channel (62), described the first interface channel (62) connects described the first side (20) and described back pressure chamber (58), and switches connected state by described valve body (93) in described the first interface channel (62); With

The second interface channel (64), described the second interface channel (64) is communicated with between described the second side (22) and described chamber of septum (90);

Wherein, the baffle plate (104) of described valve body (93) is arranged on the fluid supply side of described back pressure chamber (58), described the first interface channel (62) is connected to described fluid supply side, and described back pressure chamber (58) is communicated with described the second side (22) via described the second interface channel (64).

2. pressure regulating equipment as claimed in claim 1, it is characterized in that, wherein, described valve body (93) is configured to move along axis direction in the inside of described nozzle (92), in the inside of described valve body (93), guide channel (98) is formed along described axis direction and penetrates, and sets up connection between described back pressure chamber (58) and the described chamber of septum (90) by described guide channel (98).

3. pressure regulating equipment as claimed in claim 1 or 2, it is characterized in that, wherein, throttle part (154) is arranged on the downstream of described back pressure chamber (58), is used for the flow that flows into the described pressure fluid of described the second interface channel (64) from described back pressure chamber (58) is carried out throttling.

4. pressure regulating equipment as claimed in claim 1 or 2, it is characterized in that, further comprise branched bottom (152), described branched bottom (152) connects described the second interface channel (64) and described back pressure chamber (58), wherein, throttle part (154) is arranged in the described branched bottom (152), is used for the flow that flows into the described pressure fluid of described the second interface channel (64) from described back pressure chamber (58) is carried out throttling.

5. pressure regulating equipment as claimed in claim 1, it is characterized in that, wherein, described valve body (93) comprises groove (202), when described nozzle (92) was closed by described baffle plate (104), the part of described pressure fluid was flowed through between described nozzle (92) and described back pressure chamber (58) and the described chamber of septum (90) by described groove (202).

6. pressure regulating equipment as claimed in claim 5, it is characterized in that wherein, described groove (202) is formed in the described valve member (100), and cave in the direction away from spherical (106), described spherical (106) is placed in the described valve member (100).

7. pressure regulating equipment as claimed in claim 6 is characterized in that, wherein, described groove (202) forms leg-of-mutton xsect.